Bicycle



FIG. 1 is a right side view of the bicycle;

FIG. 2 is a left side view of the bicycle;

FIG. 3 is a front view of the bicycle;

FIG. 4 is a rear view of the bicycle;

FIG. 5 is a top plan view of the bicycle; and,

FIG. 6 is a bottom plan view of the bicycle.

The ornamental design for a bicycle, as shown and described.